AC3 DLC Has Reset My Game! HELP!

The DLC has erased my progress.

I get the Latest DLC from within the AC3 game and now:

I have 0$ money
I have to start over in the bunker and do the animus training (right now checking to se what is going on with settings, etc.)
The mission I am on is listed as Opera - Main missions are now at 0%
All side missions at 100%
My % Complete went from 85% to 45%
Per menu, I have to make all the courier deliveries again
I still have my stats, and all the side stuff is complete in the DNA, but the main missions are ALL INCOMPLETE. The game thinks I am starting over?
I still have amimus hacks, and I am in the cloud

Is Ubi trolling me? This is my first AC game, so I am not sure how to take this.

MY PROGRESS HAS BEEN ERASED BY THE DLC FOR WHICH I PRE-PAID (SEASON PASS)!

I Know on my 1st playthrough - I Had no major glitches or problems until i added my Benedict Arnold DLC (Code i got with the game) Then suddenly my captain Kidd DNA reset to ZERO - despite i'd completed each one 100% & had the treasure still.
I Had to replay each CK treasure mission again to gain the DNA stats back.

I've had a few games disrupted when DLC is added .........Mortal Kombat - Arkham City - AC-B Davinci ......

I basically had to start over with the main game. I am at the end of Sequence 5, so we'll see.

It's odd that all my side stuff is done, but they are still showing me stuff like the vantage points and deliveries, boxing, etc. But it shows as all done. The homestead has all the stuff as well, and I have double pistols. Just some real glitches in this game database. very very odd, but I certainly hope I dont have to start ALL OVER again with a new game. that would really suck.

At least I still have my money and gamerscore achievements. I just beat the board games last night.

I'm going to get through sequence 6 and see where that gets me. this is just a huge bummer. Basically, everything is 100 except the main missions and I cant get the DLC. Lots of inconsistencies in the side challenges icons still showing up, as well as outfits, etc. I put on his buddy's outfit, and now I'm stuck with it. Can't even wear Connor's base outfit.

Davinci DLC did a similar thing to me in AC-B - Would not allow me accomplish ANY Davinci trophies in my main game which was already 100% finished .
I Did have to start a New second game file to be able to play Davinci missions - But after doing first Davinci mission & ticking off a couple of trophies - All the Davinci DLC was working in my original game for some reason.